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Measurement of Ventricular Wall Motion, Epicardial Electrical Mapping, and Myocardial Fiber Angles in the Same Heart

  • Elliot McVeigh
  • Owen Faris
  • Dan Ennis
  • Patrick Helm
  • Frank Evans
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2230)

Abstract

Methods for the precise measurement of three dimensional myocardial motion non-invasivley with MRI have recently been developed. These methods use a technique called “presaturation tagging” to mark the myocardium, and rapid MRI to track the motion of these markers. A unique capability of this method is the production of strain images representing the local deformation of the myocardium. These images clearly show the sequence of events during the activation of the heart, and can demonstrate abnormalities caused by asynchronous electrical activation or ischemia. Coupled with the near simultaneous mapping of electrical depolarization with an epicardial sock array, we can investigate the relationship between electical activity and mechanical function on a local level. Registered fiber angle maps can be obtained in the same heart with diffusion MRI to assist in the construction of the mechanoelectrical model of the whole heart.

Keywords

Fiber Angle Pace Site Mechanical Activation Time Electrical Activation Time Body Surface Electrode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Elliot McVeigh
    • 1
    • 2
  • Owen Faris
    • 1
    • 2
  • Dan Ennis
    • 1
    • 2
  • Patrick Helm
    • 1
    • 2
  • Frank Evans
    • 1
    • 2
  1. 1.Laboratory of Cardiac Energetics National Heart Lung and Blood Institute National Institutes of HealthBethesda
  2. 2.Johns Hopkins University School of MedicineUSA

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